Who initiated the semi-implicit difference method?

Zeng Qingcun pioneered the semi-implicit difference method.

Zeng Qingcun pioneered the semi-implicit difference method of numerical prediction, which is a commonly used numerical simulation technology in meteorological field, and is used to predict the changing trend of atmospheric circulation, temperature, humidity and other related parameters. He is a leading figure in China's meteorological forecast. He has won the International Meteorological Organization Award and is known as the "Nobel Prize" in meteorology.

The semi-implicit difference method pioneered by him successfully solved the baroclinic primitive equations for the first time in the world, and gave the world's first weather forecast chart for solving the primitive equations, which reduced the losses caused by meteorological disasters to human production and life. This method is still widely used in weather forecast. He is Zeng Qingcun, an academician of China Academy of Sciences and a researcher in lasg.

Zeng Qingcun was born in a poor peasant family in Yangjiang, Guangdong. The father, who has never officially read a book, knows the importance of reading and lets his two sons study while farming. Under the guidance of his father, this family graduated two college students and trained two scientists: one was Zeng Qingcun, and the other was his brother Zeng Qingfeng, a famous geologist in China.

196 1, Zeng Qingcun pioneered the "semi-implicit difference method" for numerical prediction. This result was immediately applied to the Moscow World Meteorological Center, and the forecast accuracy was unprecedentedly improved to 6 1%. Since then, numerical forecasting has become the main method of meteorological forecasting.

Scientific research achievements:

Zeng Qingcun is in his doctoral thesis. He is the first person in the world to use primitive equations to make numerical weather forecast. "Semi-implicit difference method" is still one of the core technologies of weather and climate numerical model, and has been widely used in various disciplines, becoming one of the mainstream algorithms of contemporary supercomputing.

Semi-implicit difference method is the earliest method to successfully integrate the original equation, which creates a difference scheme that strictly maintains energy conservation and completely overcomes the instability of nonlinear calculation, and is widely used. A strict theory of geostrophic adaptation process is established; Solve some basic problems in geophysical fluid dynamics; In order to select the remote sensing channel reasonably, the theory of optimal information layer is put forward.